William h



(No Model.)

W. H. BAXTER.

STONE 0R URE GRUSHBR.

10.267,394. I Patented N0v.14,1882.

Flo 2 WITNESSFAES NvErv-r-OR N. PETERS. Pmmmrmgnphm. wasningmn. D. C.

NII'ED STATES PATENT- OFFICE.

STONE OR ORE CRUSHER.f

SPECIFICATION forming part of Letters Patent No. 267,394, dated November14, 1882. Application filed June 30, 1882. (No model.) Patented inEngland October 4, 1878, No. 3,914.

To all whom t may concern:

Beit known that I, WILLIAM HENRY BAX- v TER, of Leeds, in the county ofYork, England,

have invented a new and useful Improvement in Stone or Ore Crushers, ofwhich the following isa specitication.

I have obtained Letters Patent for this invention in Great Britain,under date of October 4, 1878, N o. 3,914.

The object of my invention is the production ot' a stone or ore crushingmachine of great efciency and crushing-power, the machine beingcomparatively light and cheap, and the parts arranged soas to be compactand to apply the crushing force to the best advantage.

In the drawings, Figure l is a longitudinal section, and Fig. 2 is aplan looking at the top.

a is the frame-work ot' the machine; b, the jaws, and c the corrugatedplates in iront of thejaws. Between thejaws b and plates c the crushingor breaking operation takes place.

The toggles d d are ot' ordinary construction.

ln order 'to give the required motion to the jaws b, I mount thecrank-shaft or eccentric e in bearingsfon the frame-work a of themachine and convey motion therefrom by means .of the rod g to thelever-arms h, which are supported at t' ou the frame-Work a ofthemachine.

To the upper ends of the lever-arms h are attached the toggle-rods k,and these leverarms h, toggle-rods 7c, and rod g are connected togetherat their upper ends by the joint-pin l.

By giving a rotary motion to the crank-shaft or eccentric e a radialreciprocating motion is imparted to the lever-arms It, and during thismovement of passing over its center the toggle-rods k are lifted andlowered, thus giving the desired motion to the toggles d d', thence tothe jaws b.

The inclines m aand bolt n are of ordinary construction, and areemployed to adjust the position of thejaws b. 1

The rods o and plates p, attached to the leverarms h, are employed `totransmit the return motion to thejaws. Motion is transmitted to themachine from some suitable motor through driving-pulley q, assisted byily-wheel r.

I find by experiment that one great improvement achieved fortransmitting motion to the jaws of stone or ore crushers is that insteadof giving a slow-crushing motion it is preferable to give a hammer-likeblow to the material, which more quickly and eiI'ectually breaks thestone or ore; also, that much less power is required t'or working themachine. Ihe arrangement is also equally applicable to double as v wellas single machines; also, by increasing the length of the back toggles,d', and shortening the front toggles, d, the motion of the jaws b isincreased.

Having now described the nature of my said invention, what I claim is Ina stone or ore crushcr, the combination, with the moving jaws b,actuating-toggles d d', and toggle-rods k, of the rod g, eccentric e,and actuating mechanism, the lever-arms h, connected at their lower endsto the frame-Work of the machine, the joint-pin l, connecting the upperends ot' the arms to the rod g, and toggle-rods k, substantially as andfor the purposes set forth.

W. H. BAXTER. Witnesses:

J. W. HARDING, J. O. JEFFERSON.

